sweat [sth] off, sweat off [sth]vtr phrasal sepphrasal verb, transitive, separable: Verb with adverb(s) or preposition(s), having special meaning, divisible--for example, "call off" [=cancel], "call the game off," "call off the game."
informal (weight: lose by exercising)
通过出汗来减肥 tōng guò chū hàn lái jiǎn féi
After the holiday season I'm going to need to sweat off a few kilos at the gym.